Yes to your first question; No to your second.

They called me and said they are filing charges of fraud against me unless i settle outta court and give them $300. So I did. do u think i got scammed? Are they a legitimate company?

Leaving threatning messages on voicemail that charges have been filed with a case number and that I need to respond immediantly. For what? They didnt say

Have threatened and called several relatives about bogus "court case". . . Really?

They call for companies that you may/may not owe funds to. To verify address and place of employment to serve you with a complaint that is trying to be filed against you.